This was used before to get the git installer, but now depot_tools manages its
own copy of CIPD.

BUG=673940

Change-Id: I1077ff7eb27d9ca191dc0092b7cacaaa69c40449
Reviewed-on: https://chromium-review.googlesource.com/420303
Commit-Queue: Robbie Iannucci <iannucci@chromium.org>
Reviewed-by: Aaron Gable <agable@chromium.org>
Reviewed-by: Vadim Shtayura <vadimsh@chromium.org>